#include<stdio.h>
#include<assert.h>
char* my_strcpy(char* des, const char* sou)
{
	assert(des && sou);
	char* ret = des;
	while (*des++ = *sou++)
		;
	return ret;
}
int main()
{
	char arr1[] = "abcdef";
	char arr2[10] = { 0};
	my_strcpy(arr2, arr1);
	printf("%s\n", arr2);
	return 0;
}